WHAT WE OFFER

We are a specialized manufacturer of brass valves, HVAC plumbing fixtures, piping and industrial applications.

JL-B1069

Medium temperature:-20C≤t≤110°CMaximum working pressure : 2Mpa(20bar)Working medium:water,non-corrosive liquid
JL-B1715B

Medium temperature:-20C≤t≤110°CMaximum working pressure : 2Mpa(20bar)Working medium:water,non-corrosive liquid
JL-B1171

Medium temperature:-20C≤t≤110°CMaximum working pressure : 2Mpa(20bar)Working medium:water,non-corrosive liquid
JL-B1181

Medium temperature:-20C≤t≤110°CMaximum working pressure : 1Mpa(10bar)Working medium:water,non-corrosive liquid

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ABOUT DOVA

Zhejiang Jiafu HVAC Co., Ltd. is located in the Yuhuan Valve Base, China. We are a specialized manufacturer of brass valves, HVAC plumbing fixtures, pipes, and products for industrial applications.

Since our establishment in 2004, we have received a good reputation for our commitment to R&D, production, service, and OEM solutions with 20 years of experience in this field.

2004

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ENTERPRISE EQUIPMENT

According to the ISO 9001:2015 management system, we have full control over the process from incoming materials, forging, machining, and assembly to shipment. Our valves have passed CE, EN331, WRAS, and ACS certifications and are completely leak-tested during the production process. With the help of our in-house testing laboratory, we inspect valve quality professionally and efficiently.

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DOVA VALVE SERIES

We are a specialized manufacturer of brass valves, HVAc plumbing fixtures, pipes and industrial applications.

LATEST UPDATES

Provide you with the latest enterprise and industry news.

2026-05-27

What are the precautions for using Brass Check Valve?

Swing Check Valve (Wafer Type): A hinged disc (clapper) swings open when fluid flows forward and closes against a seat when flow reverses. Disc movement arc is 45 to 90 degrees. Body length is short: 60 to 120 mm for a 1-inch size. These valves produce a pressure drop of 0.3 to 0.8 bar at nominal fl...
2026-05-22

Stainless Steel Manifolds: Uses and Regional Standards

Functional Applications and Design Features of Stainless Steel Manifolds Fluid distribution and collection in industrial systems. A stainless steel manifold is a component that distributes fluid from a single inlet to multiple outlets or collects fluid from multiple inlets to a single outlet. Commo...
2026-05-15

What pressure and temperature limits apply to brass mini ball valves?

The pressure-temperature rating of a brass mini ball valve depends on the seat material (soft seats) and end connection type. For a standard valve with PTFE (polytetrafluoroethylene) seats, the following limits apply. Maximum working pressure (water, oil, gas at 20°C): 2.5–6.0 MPa (25–60 bar) depe...